quitter vs deserter

quitter and deserter both are nouns.

Word	Noun	Adjective	Verb	Adverb
quitter	Yes	No	No	No
deserter	Yes	No	No	No

As nouns, deserter is a hyponym of quitter; that is, deserter is a word with a more specific, narrower meaning than quitter:

quitter: a person who gives up too easily
deserter: a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

Other hyponyms of quitter include abdicator, dropout, apostate, ratter, recreant, renegade, turncoat.

quitter (noun)	deserter (noun)
a person who gives up too easily	a person who abandons their duty (as on a military post)
	a disloyal person who betrays or deserts his cause or religion or political party or friend etc.